EnsuresLTLengthOf (checker-framework 3.39.0-eisop1 API)

```
@Documented
@Retention(RUNTIME)
@Target({METHOD,CONSTRUCTOR})
@PostconditionAnnotation(qualifier=LTLengthOf.class)
@InheritedAnnotation
@Repeatable(List.class)
public @interface EnsuresLTLengthOf
```
Indicates that the value expressions evaluate to an integer whose value is less than the lengths of all the given sequences, if the method terminates successfully.
Consider the following example, from the Index Checker's regression tests:
```
 @EnsuresLTLengthOf(value = "end", targetValue = "array", offset = "#1 - 1")
  public void shiftIndex(@NonNegative int x) {
      int newEnd = end - x;
      if (newEnd < 0) throw new RuntimeException();
      end = newEnd;
  }
 
 
```
where end is annotated as @NonNegative @LTEqLengthOf("array") int end;
This method guarantees that end has type @LTLengthOf(value="array", offset="x - 1") after the method returns. This is useful in cases like this one:
```
 public void useShiftIndex(@NonNegative int x) {
    // :: error: (argument.type.incompatible)
    Arrays.fill(array, end, end + x, null);
    shiftIndex(x);
    Arrays.fill(array, end, end + x, null);
 }
 
```
The first call to Arrays.fill is rejected (hence the comment about an error). But, after calling shiftIndex(x), end has an annotation that allows the end + x to be accepted as @LTLengthOf("array").
See Also:

EnsuresLTLengthOfIf, LTLengthOf

See the Checker Framework Manual:
Index Checker

Required Element Summary

Required Elements
Modifier and Type	Required Element	Description
`java.lang.String[]`	`targetValue`	Sequences, each of which is longer than the each of the expressions' value on successful method termination.
`java.lang.String[]`	`value`	The Java expressions that are less than the length of the given sequences on successful method termination.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`java.lang.String[]`	`offset`	This expression plus each of the value expressions is less than the length of the sequence on successful method termination.

- Element Detail
  - value
```
@JavaExpression
java.lang.String[] value
```
    The Java expressions that are less than the length of the given sequences on successful method termination.
    
    See the Checker Framework Manual:
    Syntax of Java expressions
- - targetValue
```
@JavaExpression
@QualifierArgument("value")
java.lang.String[] targetValue
```
    Sequences, each of which is longer than the each of the expressions' value on successful method termination.
- - offset
```
@JavaExpression
@QualifierArgument("offset")
java.lang.String[] offset
```
    This expression plus each of the value expressions is less than the length of the sequence on successful method termination. The offset element must ether be empty or the same length as targetValue.
    
    Returns:
    
    the offset expressions
    
    Default:
    
    {}